On January 3, 2020, the world was shocked to read and see the news that Qassem Suleimani, a member of Iran's elite military and an Iranian revolutionary garrison, was killed as the result of a U.S. air strike. The Kuds Army, of which Qassem Suleimani was commander-in-chief, is an organization that provides support and command directions to pro-Iran militants and government forces overseas. In particular, Qassem Suleimani leads the battle against IS when Iraq launched its counter-IS operation. For this reason, Suleimani was a man who enjoyed much national support from Iranians. However, from the U.S. and Israel's perspective, Suleimani and Kudswung have long been a person to keep eye on as they were often considered as a key to terrorism. In addition, Suleimani had irritated the U.S. and U.S. officials believed Suleimani was behind frequent clashes between the U.S. and pro-Shiite militias in Iraq. After the U.S. Embassy in Iraq was attacked in Baghdad, Iraq and the U.S.-led conflict began. On December 31, 2019, U.S. President Trump posted on Twitter that Iran was behind the U.S. embassy raid in Baghdad. Then, on January 1, 2020, Iran's supreme leader, Ayatollah Ali Khamenei refuted the claim on Twitter. On January 3, 2020, an MQ-9 unmanned drone attacked a vehicle carrying Suleimani and killed him. President Trump officially announced Suleimani's death at a news conference right afterward.

U.S. President Trump tweeted, "Suleimani is, directly and indirectly, responsible for the deaths of millions of people killed in recent protests in Iran. Iran won't admit it, but Suleimani was hatred and feared in Iran." Trump said that was cause enough for Suleimani's removal. The U.S. Department of Defense stood behind President Trump. In other words, the U.S. decided that a preemptive attack was needed because Suleimani was plotting an imminent attack against U.S. citizens. He was attacked and killed to prevent the loss of U.S. people. Iran's president, Lohani, visited Suleimani's bereaved family and promised to retaliate against the United States. The conflict between the United States and Iran has had a huge impact on not only the U.S. and Iran but also on many other nations around the world. For the first time, major overseas indices such as Dow Industrial, Nasdaq and S&p500 fell and domestic stock markets in South Korea fell 0.98 percent. Prices of safe-haven gold, dollar, and yen surged, and the price of crude oil also surged. U.S. big cities have tightened their vigilance against possible Iranian retaliation, and Iran has also appointed the next commander of the Kuds Army to strengthen its will to fight back. With violence escalating, the whole world is watching even the smallest acts by the U.S. and Iran.

1)Jung Uigil, "Heightened Tension Due to the Murder of Suleimani… Will There Be War Between the U.S and Iran?", Hankyoreh News, January 5, 2020